If you look up "Dr. Frankenstein Discord" you'll find the community that helped me get familiar with Docker. As in, several people held my hands for about 2 weeks non-stop. I can't tell you enough how much I love that group. But containers aren't the only way to go.
I hear people talking about Proxmox a lot, and it seems (as far as I can tell) to be one of the easiest platforms for hosting many services one a machine. Next computer I set up, I'll be going that route.
Regardless of how you do it, the knowledge base and skills mostly transfer like a Venn diagram. The most important pieces to get started are hardware and patience. Everything else can be solved with online teamwork
Not just the 80s, I had some in the early 2000s. It was delicious